devela::_dep::bytemuck

Function try_cast_arc

pub fn try_cast_arc<A, B>(
    input: Arc<A>,
) -> Result<Arc<B>, (PodCastError, Arc<A>)> ⓘ
where
    A: NoUninit + AnyBitPattern,
    B: NoUninit + AnyBitPattern,
Available on crate feature dep_bytemuck only.
Expand description

Attempts to cast the content type of a Arc.

On failure you get back an error along with the starting Arc.

The bounds on this function are the same as cast_mut, because a user could call Rc::get_unchecked_mut on the output, which could be observable in the input.

§Failure

  • The start and end content type of the Arc must have the exact same alignment.
  • The start and end size of the Arc must have the exact same size.